Seawater carbonate chemistry and coral micro‑ and macro‑morphological skeletal properties ...

• Main Authors: Prada, Fiorella, Brizi, Leonardo, Franzellitti, Silvia, Mengoli, Stefano, Fermani, Simona, Polishchuk, Iryna, Baraldi, Nicola, Ricci, Francesco, Palazzo, Quinzia, Caroselli, Erik, Pokroy, Boaz, Giorgini, Loris, Dubinsky, Zvy, Fantazzini, Paola, Falini, Giuseppe, Goffredo, Stefano, Fabricius, Katharina Elisabeth
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Acropora millepora; Animalia; Benthic animals; Benthos; Cnidaria; CO2 vent; Coast and continental shelf; Field observation; Galaxea fascicularis; Growth/Morphology; Other studied parameter or process; Pocillopora damicornis; Porites sp.; Single species; South Pacific; Tropical; Type; Location; Species; Registration number of species; Uniform resource locator/link to reference; Site; Replicates; Density; Density, standard deviation; Porosity; Porosity, standard deviation; Fraction; Fraction, standard deviation; Water; Water, standard deviation; Organic matrix; Organic matrix, standard deviation; pH; pH, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Salinity; Salinity, standard deviation; Temperature, water; Temperature, water, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.943053; https://doi.pangaea.de/10.1594/PANGAEA.943053

This study investigates the effects of long-term exposure to OA on skeletal parameters of four tropical zooxanthellate corals naturally living at CO2 seeps and adjacent control sites from two locations (Dobu and Upa Upasina) in the Papua New Guinea underwater volcanic vent system. The seeps are characterized by seawater pH values ranging from 8.0 to about 7.7. The skeletal porosity of Galaxea fascicularis, Acropora millepora, massive Porites, and Pocillopora damicornis was higher (up to ~ 40%, depending on the species) at the seep sites compared to the control sites. Pocillopora damicornis also showed a decrease of micro-density (up to 7%). Thus, further investigations conducted on this species showed an increase of the volume fraction of the larger pores (up to 7%), a decrease of the intraskeletal organic matrix content (up to 15%), and an increase of the intraskeletal water content (up to 59%) at the seep sites. The organic matrix related strain and crystallite size did not vary between seep and control ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-04-06. ...